Update optimizing.md

Need note about increasing GPU memory on Pi - otherwise ffmpeg hwaccel won't work
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@ -14,6 +14,7 @@ title: Optimizing performance
Frigate works on Raspberry Pi 3b/4 and x86 machines. It is recommended to update your configuration to enable hardware accelerated decoding in ffmpeg. Depending on your system, these parameters may not be compatible. Frigate works on Raspberry Pi 3b/4 and x86 machines. It is recommended to update your configuration to enable hardware accelerated decoding in ffmpeg. Depending on your system, these parameters may not be compatible.
Raspberry Pi 3/4 (32-bit OS) Raspberry Pi 3/4 (32-bit OS)
Ensure you increase the allocated RAM for your GPU to at least 128 (raspi-config > Performance Options > GPU Memory).
**NOTICE**: If you are using the addon, ensure you turn off `Protection mode` for hardware acceleration. **NOTICE**: If you are using the addon, ensure you turn off `Protection mode` for hardware acceleration.
```yaml ```yaml